I currently use IPB to run my forums and classifieds. I would like to add a new feature - selling digital products. I think this would need IP Downloads.

However, I also want other members to be able to sell their digital products on the site but I'll take a percentage or commission from it. I think that I would need Nexus to facilitate this.

Am I right in the above assumptions?

I have a demo board taht I am trialling on but Downloads and Nexus are combined so it's hard for me to tell what is what. I think Nexus looks fantastic but not sure it would be worth the outlay in my situation. Wondering if I need it or if I can get by with only IP Downloads.